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Message-ID: <tencent_2B9817738F38B02844C245946EFF3B407E09@qq.com> Date: Thu, 7 Apr 2022 17:33:49 +0800 From: xkernel.wang@...mail.com To: mturquette@...libre.com, sboyd@...nel.org Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, Xiaoke Wang <xkernel.wang@...mail.com> Subject: [PATCH v2] clk: pxa: add a check for the return value of kzalloc() From: Xiaoke Wang <xkernel.wang@...mail.com> kzalloc() is a memory allocation function which can return NULL when some internal memory errors happen. So it is better to check it to prevent potential wrong memory access. Signed-off-by: Xiaoke Wang <xkernel.wang@...mail.com> --- ChangeLog: v1->v2 stop trying to allocate more and return an error. drivers/clk/pxa/clk-pxa.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/pxa/clk-pxa.c b/drivers/clk/pxa/clk-pxa.c index cfc79f9..be6b950 100644 --- a/drivers/clk/pxa/clk-pxa.c +++ b/drivers/clk/pxa/clk-pxa.c @@ -102,6 +102,8 @@ int __init clk_pxa_cken_init(const struct desc_clk_cken *clks, int nb_clks) for (i = 0; i < nb_clks; i++) { pxa_clk = kzalloc(sizeof(*pxa_clk), GFP_KERNEL); + if (!pxa_clk) + return -ENOMEM; pxa_clk->is_in_low_power = clks[i].is_in_low_power; pxa_clk->lp = clks[i].lp; pxa_clk->hp = clks[i].hp; --
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